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DEBT - Components of Long-Term Debt (Details) - USD ($) $ in Millions	Jun. 27, 2026	Sep. 30, 2025	Jun. 28, 2025	Aug. 13, 2021	Mar. 17, 2021	Oct. 22, 2019	Dec. 15, 2016
Debt Instrument [Line Items]
Total debt	$ 2,125.6	$ 2,119.7	$ 2,202.6
Less current portions	277.0	57.2	52.1
Long-term debt	1,836.3	2,049.2	2,136.2
Credit Facilities \| Revolving loans
Debt Instrument [Line Items]
Total debt	25.0	0.0	0.0
Credit Facilities \| Term loans
Debt Instrument [Line Items]
Total debt	$ 487.5	$ 500.0	$ 587.5
Senior Notes \| 4.000% Senior Notes Due 2031
Debt Instrument [Line Items]
Interest rate of debt (percentage)	4.00%	4.00%	4.00%		4.00%
Total debt	$ 500.0	$ 500.0	$ 500.0
Senior Notes \| 4.375% Senior Notes Due 2032
Debt Instrument [Line Items]
Interest rate of debt (percentage)	4.375%	4.375%	4.375%	4.375%
Total debt	$ 400.0	$ 400.0	$ 400.0
Senior Notes \| 4.500% Senior Notes Due 2029
Debt Instrument [Line Items]
Interest rate of debt (percentage)	4.50%	4.50%	4.50%			4.50%
Total debt	$ 450.0	$ 450.0	$ 450.0
Senior Notes \| 5.250% Senior Notes Due 2026
Debt Instrument [Line Items]
Interest rate of debt (percentage)	5.25%	5.25%	5.25%				5.25%
Total debt	$ 250.0	$ 250.0	$ 250.0
Long-term debt
Debt Instrument [Line Items]
Less unamortized debt issuance costs	12.3	13.3	14.3
Other
Debt Instrument [Line Items]
Total debt	0.0	5.2	0.0
Finance Lease Obligations
Debt Instrument [Line Items]
Total debt	$ 13.1	$ 14.5	$ 15.1